A Ukrainian company said it made jamming-resistant drones and handed the first 15 to the military.
But Russian jamming has made many inoperable and forced operators to get closer to the front lines.
These latest drones are upgraded versions of the existing Punisher drone, the company said, which has been used to complete scores of successful missions against Russian forces.
Yarema, a Ukrainian soldier helping with the Punisher drone effort, told The New Voice of Ukraine that "the most important thing is that the innovative system is resistant to electronic warfare."
One Ukrainian drone operator told the BBC that this has meant they have to move closer to the front lines, putting lives in danger.
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